A Zener diode is another form of diode, but is used for entirely different purpose. They are mainly used in protection circuits or as crude voltage regulators. Let us see how we can select one for your application.

Here we will learn the basics of RF module and how to use it as a standalone RF Transmitter and Receiver. Here we have explained the RF Transmitter and Receiver Circuit by controlling the LEDs wirelessly using RF.

A Panic Alarm Circuit is used to send an emergency signal immediately to the people in nearby location to call for help or to alert them. The possible panic situation can be any, it is not restricted to few situations.

This tutorial shows some of the basic capabilities of an Arduino and it’s integration with Ubidots. After doing it, you'll learn what an Arduino is, what it does and how you can set it up to turn an LED (or any other actuator) on and off from your Ubidots account. All you need to get started is an Arduino board and the official Arduino WiFi Shield.

This walking and dancing robot that takes command from an Android application to perform some pre-defined actions. You can also use the program (given at the end of the tutorial) to easily manipulate the actions of your very own robot by controlling the position of the servo motors using the Serial monitor.